Convex-concave roller



FIG. 1 is a perspective view of a first embodiment of our new design fora convex-concave roller, both rollers having a smooth surface;

FIG. 2 is an end view of the convex-concave roller shown in FIG. 1;

FIG. 3 is a front elevational view of the convex-concave roller shown inFIG. 1;

FIG. 4 is an opposite end view of the convex-concave roller shown inFIG. 1;

FIG. 5 is a side elevational view of the convex-concave roller shown inFIG. 1;

FIG. 6 is a rear elevational view of the convex-concave roller shown inFIG. 1;

FIG. 7 is an opposite side elevational view of the convex-concave rollershown in FIG. 1;

FIG. 8 is a perspective view of a second embodiment of our new designfor a convex-concave roller, both rollers having a flocked or a texturedsurface;

FIG. 9 is an end view of the convex-concave roller shown in FIG. 8;

FIG. 10 is a front elevational view of the convex-concave roller shownin FIG. 8;

FIG. 11 is an opposite end view of the convex-concave roller shown inFIG. 8;

FIG. 12 is a side elevational view of the convex-concave roller shown inFIG. 8;

FIG. 13 is a rear elevational view of the convex-concave roller shown inFIG. 8;

FIG. 14 is an opposite side elevational view of the convex-concaveroller shown in FIG. 8;

FIG. 15 is a perspective view of a third embodiment of our new designfor a convex-concave roller, one roller having a smooth surface and theother roller having a flocked or textured surface;

FIG. 16 is an end view of the convex-concave roller shown in FIG. 15;

FIG. 17 is a front elevational view of the convex-concave roller shownin FIG. 15;

FIG. 18 is an opposite end view of the convex-concave roller shown inFIG. 15;

FIG. 19 is a side elevational view of the convex-concave roller shown inFIG. 15;

FIG. 20 is a rear elevational view of the convex-concave roller shown inFIG. 15;

FIG. 21 is an opposite side elevational view of the convex-concaveroller shown in FIG. 15;

FIG. 22 is a perspective view of a fourth embodiment of our new designfor a convex-concave roller, one roller having a smooth surface and theother roller having a flocked or textured surface;

FIG. 23 is an end view of the convex-concave roller shown in FIG. 22;

FIG. 24 is a front elevational view of the convex-concave roller shownin FIG. 22;

FIG. 25 is an opposite end view of the convex-concave roller shown inFIG. 22;

FIG. 26 is a side elevational view of the convex-concave roller shown inFIG. 22;

FIG. 27 is a rear elevational view of the convex-concave roller shown inFIG. 22; and,

FIG. 28 is an opposite side elevational view of the convex-concaveroller shown in FIG. 22.

The ornamental design for a convex-concave roller, substantially asshown and described.